Professional nerd Anna Kendrick stopped by The Late Show with Stephen Colbert to talk Lord of the Rings, geek out about Stephen Sondheim, and sing a little song with host Stephen Colbert.

Kendrick was also there to promote #BestSchoolDay, a philanthropic arm of Donors Choose that directly benefits schools across the country. According to Uproxx, Kendrick and another anonymous donor funded 74 different projects in schools across Maine, Kendrick’s home state.